curl.se: new home

Closes #6172

lib: fix -Wassign-enum warnings

configure --enable-debug now enables -Wassign-enum with clang,
identifying several enum "abuses" also fixed.

Reported-by: Gisle Vanem
Bug: ht

lib: fix -Wassign-enum warnings

configure --enable-debug now enables -Wassign-enum with clang,
identifying several enum "abuses" also fixed.

Reported-by: Gisle Vanem
Bug: https://github.com/curl/curl/commit/879007f8118771f4896334731aaca5850a154675#commitcomment-42087553

Closes #5929

show more ...

configure: let --enable-debug set -Wenum-conversion with gcc >= 10

Unfortunately, this option is not detecting the same issues as clang's
-Wassign-enum flag, but should still be useful t

configure: let --enable-debug set -Wenum-conversion with gcc >= 10

Unfortunately, this option is not detecting the same issues as clang's
-Wassign-enum flag, but should still be useful to detect future
mistakes.

Closes #5930

show more ...

configure: allow disabling warnings

When using `--enable-warnings`, it was not possible to disable warnings
via CFLAGS that got explicitly enabled. Now warnings are not enabled
anymo

configure: allow disabling warnings

When using `--enable-warnings`, it was not possible to disable warnings
via CFLAGS that got explicitly enabled. Now warnings are not enabled
anymore if they are explicitly disabled (or enabled) in CFLAGS. This
works for at least GCC, clang, and TCC as they have corresponding
`-Wno-` options for every warning.

Closes https://github.com/curl/curl/pull/5689

show more ...

configure: remove use of -vec-report0 from CFLAGS with icc

... as it apparently isn't (always) supported.
Reported-by: Alain Miniussi
Fixes #5096
Closes #5191

configure: convert -I to -isystem as a last step

As all the -I uses in CFLAGS at that point are for system headers and
third party libraries this helps us remove/ignore warnings on those

configure: convert -I to -isystem as a last step

As all the -I uses in CFLAGS at that point are for system headers and
third party libraries this helps us remove/ignore warnings on those!

Closes #5060

show more ...

configure: document 'compiler_num' for gcc

The CURL_CHECK_COMPILER_GNU_C function sets the number to MAJOR*100 +
MINOR and ignores the patch version, and since gcc version 7 it only

configure: document 'compiler_num' for gcc

The CURL_CHECK_COMPILER_GNU_C function sets the number to MAJOR*100 +
MINOR and ignores the patch version, and since gcc version 7 it only
sets it to MAJOR*100.

Reported-by: Stepan Efremov
Ref: #5067
Closes #5069

show more ...

curl-compilers.m4: check for __ibmxl__ to detect xlclang

Follow-up to 2fa0d57e2e3. The __xlc__ symbol is only defined there if a
particular flag is used for legacy macros.

Fixes

curl-compilers.m4: check for __ibmxl__ to detect xlclang

Follow-up to 2fa0d57e2e3. The __xlc__ symbol is only defined there if a
particular flag is used for legacy macros.

Fixes #3474
Closes #3479

show more ...

curl-compilers.m4: detect xlclang

Since it isn't totally clang compatible, we detect this IBM clang
front-end and if detected, avoids some clang specific magic.

Reported-by: Kee

curl-compilers.m4: detect xlclang

Since it isn't totally clang compatible, we detect this IBM clang
front-end and if detected, avoids some clang specific magic.

Reported-by: Kees Dekker
Fixes #3474
Closes #3476

show more ...

configure: s/AC_RUN_IFELSE/CURL_RUN_IFELSE

fix a few leftovers

Fixes #3006
Closes #3049

whitespace fixes

- replace tabs with spaces where possible
- remove line ending spaces
- remove double/triple newlines at EOF
- fix a non-UTF-8 character
- cleanup a few inde

whitespace fixes

- replace tabs with spaces where possible
- remove line ending spaces
- remove double/triple newlines at EOF
- fix a non-UTF-8 character
- cleanup a few indentations/line continuations
in manual examples

Closes https://github.com/curl/curl/pull/3037

show more ...

Enable more GCC warnings

This enables the following additional warnings:
-Wold-style-definition
-Warray-bounds=2 instead of the default 1
-Wformat=2, but only for GCC 4.8+ as Wno

Enable more GCC warnings

This enables the following additional warnings:
-Wold-style-definition
-Warray-bounds=2 instead of the default 1
-Wformat=2, but only for GCC 4.8+ as Wno-format-nonliteral is not
respected for older versions
-Wunused-const-variable, which enables level 2 instead of the default 1
-Warray-bounds also in debug mode through -ftree-vrp
-Wnull-dereference also in debug mode through
-fdelete-null-pointer-checks

Closes https://github.com/curl/curl/pull/2747

show more ...

curl-compilers: enable -Wimplicit-fallthrough=4 for GCC

This enables level 4 instead of the default level 3, which of the
currently used comments only allows /* FALLTHROUGH */ to silence

curl-compilers: enable -Wimplicit-fallthrough=4 for GCC

This enables level 4 instead of the default level 3, which of the
currently used comments only allows /* FALLTHROUGH */ to silence the
warning.

Closes https://github.com/curl/curl/pull/2747

show more ...

curl-compilers: enable -Wbad-function-cast on GCC

This warning used to be enabled only for clang as it's a bit stricter
on GCC. Silence the remaining occurrences and enable it on GCC too

curl-compilers: enable -Wbad-function-cast on GCC

This warning used to be enabled only for clang as it's a bit stricter
on GCC. Silence the remaining occurrences and enable it on GCC too.

Closes https://github.com/curl/curl/pull/2747

show more ...

configure: put CURLDEBUG and DEBUGBUILD in lib/curl_config.h

They are removed from the compiler flags.

This ensures that make dependency tracking will force a rebuild whenever
c

configure: put CURLDEBUG and DEBUGBUILD in lib/curl_config.h

They are removed from the compiler flags.

This ensures that make dependency tracking will force a rebuild whenever
configure --enable-debug or --enable-curldebug changes.

Closes #2548

show more ...

build: add picky compiler warning flags for gcc 6 and 7

configure: use -Wno-varargs on clang 3.9[.X] debug builds

... to avoid a clang bug

m4/curl-compilers.m4: use proper quotes around string, not backticks

... when setting clang version to assume 3.7

Caused a lot of "integer expression expected" warnings by configure.

curl-compilers.m4: disable warning spam with Cygwin's clang

When building with Cygwin or MinGW, libtool uses a wrapper executable
instead of a wrapper script [1], which is written in C a

curl-compilers.m4: disable warning spam with Cygwin's clang

When building with Cygwin or MinGW, libtool uses a wrapper executable
instead of a wrapper script [1], which is written in C and throws
missing-variable-declarations warnings. Don't enable these warnings on
Cygwin and MinGW in order to avoid warnings for every executable built,
which spams the test suite output when using Cygwin's clang.

[1] https://www.gnu.org/software/libtool/manual/html_node/Wrapper-executables.html

Closes https://github.com/curl/curl/pull/1665

show more ...

curl-compilers.m4: fix unknown-warning-option on Apple clang

Since 5598b0bd63f690c151074494ce47ef872f004ab4, clang -v is used to
detect the clang version. The version number was expected

curl-compilers.m4: fix unknown-warning-option on Apple clang

Since 5598b0bd63f690c151074494ce47ef872f004ab4, clang -v is used to
detect the clang version. The version number was expected to come after
the word "version". For Apple clang, this doesn't work as it has its
own versioning scheme.
The version number is now first searched after the string
"based on LLVM". This works for Apple clang before version 7, and also
for e.g. Ubuntu's clang up to version 3.7. If it's not found and the
version string contains "Apple LLVM version", clang version 3.7 is
assumed, which is the version that comes with Xcode 7. Otherwise, the
version number is still expected after the word "version", which works
for very old Apple clang versions.

Ref: https://trac.macports.org/wiki/XcodeVersionInfo
Fixes https://github.com/curl/curl/issues/1606
Closes https://github.com/curl/curl/pull/1607

show more ...

curl-compilers.m4: enable comma clang warning

It usually warns when using commas instead of semicolons or other
operators by accident.

Closes https://github.com/curl/curl/pull/1

curl-compilers.m4: enable comma clang warning

It usually warns when using commas instead of semicolons or other
operators by accident.

Closes https://github.com/curl/curl/pull/1578

show more ...

curl-compilers.m4: enable missing-variable-declarations clang warning

It usually warns when forgetting to declare TU-local variables static.

Closes https://github.com/curl/curl/pull

curl-compilers.m4: enable missing-variable-declarations clang warning

It usually warns when forgetting to declare TU-local variables static.

Closes https://github.com/curl/curl/pull/1578

show more ...

curl-compilers.m4: enable double-promotion warning

Enable -Wdouble-promotion for both GCC and clang. It warns on implicit
promotion from float to double.

Closes https://github.c

curl-compilers.m4: enable double-promotion warning

Enable -Wdouble-promotion for both GCC and clang. It warns on implicit
promotion from float to double.

Closes https://github.com/curl/curl/pull/1578

show more ...

curl-compilers.m4: enable vla warning for clang

Previously, that warning was only implicitly active in C90 mode.
Enable it unconditionally as already done for GCC.

Closes https:

curl-compilers.m4: enable vla warning for clang

Previously, that warning was only implicitly active in C90 mode.
Enable it unconditionally as already done for GCC.

Closes https://github.com/curl/curl/pull/1578

show more ...

curl-compilers.m4: escape square brackets in regex

Otherwise, they are removed in the final configure file.
Also changed sed to "$SED" like in most other calls in this file.